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Re: [Xen-devel] [PATCH] xen-netfront: report link speed to ethtool


  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: Pavel MatÄja <pavel@xxxxxxxxxx>
  • Date: Fri, 18 Nov 2011 20:11:31 +0100
  • Delivery-date: Fri, 18 Nov 2011 19:12:26 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On Fri 18. of November 2011 19:44:08 you wrote:
> On 11/18/2011 09:46 AM, Ben Hutchings wrote:
> > On Fri, 2011-11-18 at 17:48 +0100, Olaf Hering wrote:
> >> Add .get_settings function, return fake data so that ethtool can get
> >> enough information. For some application like VCS, this is useful,
> >> otherwise some of application logic will get panic.
> >> The reported data refers to VMWare vmxnet.
> >> 
> >> Signed-off-by: Xin Wei Hu<xwhu@xxxxxxxx>
> >> Signed-off-by: Chunyan Liu<cyliu@xxxxxxxx>
> >> Signed-off-by: Olaf Hering<olaf@xxxxxxxxx>
> > 
> > NAK, we should not just make things up.
> 
> Which raises an interesting question for a virtual interface that isn't
> pretending to be a specific NIC type. What should the reported speed be?
>   Is it a 10/100 NIC?  A 1 or 10 GbE NIC? 3.14 GbE?  For other emulated
> interfaces, it rather falls-out from the emulation.  We can say that the
> driver may not make stuff up, but it would seem what is running in the
> host/hypervisor/dom0/whatever will have to.  It could I suppose, decide
> based on the physical NIC to which it is attached, so long as folks
> using the virtual NIC don't expect its attributes to be the same from
> system to system.
> 
> rick

Hmm,
two questions from me.
I think there is 10GbE link reported in Windows gplpv 0.11.0.322 driver.
Let say I have two virtual Windows running on XEN and they are in bridge with 
1GbE physical NIC.
Will the Windows talk to each other on 10GbE thru the bridge?
What should I do to give them 10GbE access to local samba server?
-- 
Pavel Mateja

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